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An in-app HTTP inspector for Android OkHttp clients (basically Charles for Android)

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This is a fork of Chuck

Spring

Spring

Spring is a simple in-app HTTP inspector for Android OkHttp clients. Spring intercepts and persists all HTTP requests and responses inside your application, and provides a UI for inspecting their content.

Apps using Spring will display a notification showing a summary of ongoing HTTP activity. Tapping on the notification launches the full Spring UI. Apps can optionally suppress the notification, and launch the Spring UI directly from within their own interface. HTTP interactions and their contents can be exported via a share intent.

The main Spring activity is launched in its own task, allowing it to be displayed alongside the host app UI using Android 7.x multi-window support.

Spring v1.0.3 requires Android API 21+ and OkHttp 4.x. and if you need to support from Android API 16 and OkHttp 3.x. use v1.0.2, Spring is for AndroidX based projects and is updated to be kotlin based

Warning: The data generated and stored when using this interceptor may contain sensitive information such as Authorization or Cookie headers, and the contents of request and response bodies. It is intended for use during development, and not in release builds or other production deployments.

Important

V1.0.3 comes with some new UI and in-progress features to add overrides, as of 1.0.3 its non-functional, it will be made available eventually

Setup

This library can be used only with apps upgraded for AndroidX (For support library users check out the original project Chuck)

Step 1: // For Pure Java Only Apps, Kotlin user's or people who have enabled kotlin support can Skip to Step 2:

For users who want to continue using Java and use this library, you have to enable kotlin support Tools -> Kotlin -> Configure Kotlin in Project In the choose configurator popup, select Android with Gradle You can click ok for the next popup with the option "All Modules" Other than a few lines in your Gradle files nothing else would've changed and you can follow the rest of the steps to use the library and continue writing in Java

Step 2:

Include dependencies, the spring-no-op variant can be used for release flavors, to completely disable Spring for release variants

    releaseImplementation 'com.okhttpinspector.spring:spring-no-op:1.0.3'
    debugImplementation 'com.okhttpinspector.spring:spring:1.0.3'

For Okhttp3 users or for support from Android API 16 use,

    releaseImplementation 'com.okhttpinspector.spring:spring-no-op:1.0.2'
    debugImplementation 'com.okhttpinspector.spring:spring:1.0.2'

Step 3:

Use an instance of SpringInterceptor(context) and add it as an interceptor when building your OkHttp client:

Java

OkHttpClient client = new OkHttpClient.Builder()
  .addInterceptor(new SpringInterceptor(context))
  .build();

Kotlin

val client = OkHttpClient.Builder()
  .addInterceptor(SpringInterceptor(context))
  .build()

Step 4:

Spring will now record all HTTP interactions made by your OkHttp client. You can optionally disable the notification by calling showNotification(false) on the interceptor instance, and launch the Springs UI directly within your app with the intent from Spring.INSTANCE.getLaunchIntent(context) for Java and in Kotlin using Spring.getLaunchIntent(context)

EXTRA FEATURES

You can pre-configure how the Spring Network Activity UI looks by interacting with the Spring singleton

    //For Java
    Spring.INSTANCE.setTitle("Title");
    Spring.INSTANCE.setSubTitle("Subtitle"); // Setting null or no value will show only Title
    Spring.INSTANCE.setStatusBarColorHex("#000000");
    Spring.INSTANCE.setActionBarColorHex("#000000");//This will be used for the notification color accent
    Spring.INSTANCE.setSubtitle(getString(R.string.app_name));
    Spring.INSTANCE.setTabBarBackgroundColorHex("#000000");
    Spring.INSTANCE.setTabBarIndicatorColorHex("#FFFFFF");
    
    //For Kotlin
    Sping.apply{
        val black = "#000000"
        val white = "#FFFFFF"
        title = "BlaBla Network Inspector"
        actionBarColorHex = black
        statusBarColorHex = black
        tabBarBackgroundColorHex = black
        tabBarIndicatorColorHex = white
        allowOrientationChange = false
    }

PROGUARD

If you want to use Spring in a signed build with Proguard for some reason just exclude Spring

#Spring
-keep public class com.okhttpinspector.spring.** {
    public protected *;
    private <fields>;
}

FAQ

  • Why are some of my request headers missing?
  • Why are retries and redirects not being captured discretely?
  • Why are my encoded request/response bodies not appearing as plain text?

Please refer to this section of the OkHttp wiki. You can choose to use Spring as either an application or network interceptor, depending on your requirements.

Acknowledgements

Spring uses the following open source libraries:

  • Chuck - Copyright (C) 2017 Jeff Gilfelt (This is the original project from which this project is forked)
  • OkHttp - Copyright Square, Inc.
  • Gson - Copyright Google Inc.
  • Cupboard - Copyright Little Robots.

License

Copyright (C) 2019 Sebi Sheldin Sebastian.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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